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Composition containing a tensioning polymer and hybrid particles, methods of use

a technology of tensioning polymer and hybrid particles, applied in the field of composition, can solve the problems of affecting the structure and function of the skin, major drawback of limited effect over time, etc., and achieve the effects of improving the mechanical properties of the tensioning polymer film, improving the remanence of the tensioning effect on the skin, and excellent effect and long-lasting tensioning

Inactive Publication Date: 2008-07-31
LOREAL SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]Consequently, there is a need for compositions that have both excellent efficacy and a long-lasting tensioning effect. Now, the inventor has discovered that the inclusion of organic-mineral hybrid particles into compositions comprising a tensioning polymer makes it possible to improve the mechanical properties of the tensioning polymer film to allow it especially to follow facial expressions without cracking, and thus to improve the remanence of the tensioning effect on the skin.

Problems solved by technology

During the ageing process, impairment of the structure and functions of the skin appears.
Unfortunately, although compositions containing such tensioning agents have a very satisfactory immediate tensioning effect, they have the major drawback of having a limited effect over time.

Method used

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  • Composition containing a tensioning polymer and hybrid particles, methods of use
  • Composition containing a tensioning polymer and hybrid particles, methods of use
  • Composition containing a tensioning polymer and hybrid particles, methods of use

Examples

Experimental program
Comparison scheme
Effect test

examples 1 and 2

Cosmetic Compositions

Anti-Wrinkle Sera

[0117]Two sera according to the invention (Examples 1A and 2A) and two sera not forming part of the invention (Examples 1B and 2B), the latter sera not containing organic-mineral hybrid particles, were prepared.

example 1a

Invention

[0118]Anti-wrinkle serum containing 3.5% Hybridur and 3.5% of organic-mineral hybrid particles.

Phase AWater76.90gMethyl vinyl ether / maleic anhydride0.20gcopolymer crosslinked with 1,9-decadiene(Antaron ST 06 from ISP)Xanthan gum (Keltrol T from Kelco)0.20gPreserving agent0.55gPhase BWater1.00gTriethanolamine0.20gPhase CAcrylamide / sodium acrylamido-2-methyl-1.00gpropanesulfonate copolymer as an inverseemulsion at 40% in isoparaffin / water(Sepigel 305 from SEPPIC)Preserving agent0.30gPhase DAqueous dispersion containing 40% by weight8.63gof particles of an interpenetrating polymernetwork of polyurethane and polyacrylicpolymers (Hybridur 875 from Air Products)Aqueous dispersion of acrylic polymer-silica10.00ghybrid particles (AcNano DS 1000 X from BASF)

example 1b

Outside the Invention

[0119]Anti-wrinkle serum containing 7% Hybridur 875.

Phase AWater78.25gMethyl vinyl ether / maleic anhydride0.20gcopolymer crosslinked with 1,9-decadiene(Antaron ® ST 06 from ISP)Xanthan gum (Keltrol ® T from Kelco)0.20gPreserving agent0.55gPhase BWater1.00gTriethanolamine0.20gPhase CAcrylamide / sodium acrylamido-2-methyl -1.00gpropanesulfonate copolymer as an inverseemulsion at 40% in isoparaffin / water(Sepigel ® 305 from SEPPIC)Preserving agent0.30gPhase DAqueous dispersion containing 40% by weight7.30gof particles of an interpenetrating polymernetwork of polyurethane and polyacrylicpolymers (Hybridur ® 875 from Air Products)

[0120]The anti-wrinkle serum was prepared in the following manner:

[0121]Phase A is heated to about 75° C., with stirring, and phase B is then poured into phase A. Next, the heating is stopped, while continuing the stirring until the mixture has cooled to room temperature, and phases C and D are then added. Gentle stirring is then maintained for...

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Abstract

Composition containing, in a physiologically acceptable medium, a tensioning polymer and organic-mineral hybrid particles. Process, particularly for facial skin, in particular wrinkled skin, involving the application of the invention composition to the skin.

Description

REFERENCE TO PRIOR APPLICATIONS[0001]This application claims priority to U.S. provisional application No. 60 / 885,033 filed Jan. 16, 2007, and to French patent application 0752577 filed Jan. 9, 2007, both incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a composition, especially an anti-wrinkle composition, comprising, in a physiologically acceptable medium, a tensioning polymer and organic-mineral hybrid particles. The invention also relates to a process for caring for wrinkled skin, for the purpose of attenuating wrinkles, comprising the application to the skin of a composition as defined above.[0003]Additional aspects and other features of the present invention will be set forth in part in the description that follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from the practice of the present invention. The advantages of the present invention may be real...

Claims

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Application Information

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IPC IPC(8): A61K31/74A61K9/14A61P17/00
CPCA61K8/25A61K8/8147A61Q19/08A61K8/891A61K8/87A61P17/00
Inventor CASSIN, GUILLAUME
Owner LOREAL SA
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